Transport securing arrangement

ABSTRACT

A transport securing arrangement for a side extension arm ( 15 ) of a vehicle ( 14 ) having a locking device ( 1 ) and an additional securing hook ( 10 ), wherein the locking device ( 1 ) is arranged in relation to the securing hook ( 10 ) in such a way that release of the locking device ( 1 ) leads to release of the securing hook ( 10 ) from its anchorage.

[0001] The present invention concerns a transport securing arrangementfor a side extension arm of a vehicle having a locking device and anadditional securing hook.

[0002] By increasing the support surface, side extension arms of thatkind increase the stability of the parked vehicle, whereby, for examplein the case of a vehicle fitted with a crane, the steadiness of thevehicle is increased. While the vehicle is moving it is necessary toensure that the side extension arms remain in their filly retractedtransport position and do not by mistake move into a partially orcompletely extended position. In this connection, a regulating standardrequires that transport securing arrangements for side extension arms ofthis kind, besides a locking device which is hitherto already usual,must have an additional independent securing hook.

[0003] The object of the invention, in transport securing arrangementsof the general kind set forth, is to ensure easy handling, in spite ofthe duplication of the securing systems.

[0004] In accordance with the invention that is achieved in that thelocking device is arranged in relation to the securing hook in such away that release of the locking device leads to release of the securinghook from its anchorage.

[0005] The arrangement according to the invention provides that bothsecuring systems can be released by one movement of the hand.

[0006] An advantageous embodiment of the invention provides that thesecuring hook is mounted pivotably. Advantageously, there may beprovided a spring which urges the securing hook into the anchorageposition in order to prevent it from unintentionally pivoting open. Inorder to optimise reliability, the locking device can also be acted uponby a spring in the direction of the locking position.

[0007] The locking device is advantageously releasable by rotation. Thatcan be embodied for example structurally in that the locking device hasat least one guide surface which extends inclinedly relative to thelongitudinal center line of the locking device, wherein upon rotation ofthe locking device the guide surface slides along a pin.

[0008] To facilitate handling of the locking device, it is releasableindependently of the direction of rotation by rotary movement, and thatcan be embodied by the arrangement of two guide surfaces involvingopposite screw directions.

[0009] A structurally particularly simple embodiment of the inventionprovides that the securing hook partially bears against a portion of thelocking device, which is eccentrically shaped, for example of acam-shaped configuration.

[0010] Further features and details of the invention will be apparentfrom the specific description hereinafter. In the drawing:

[0011]FIG. 1a shows a vehicle with side extension arms which are securedby a transport securing arrangement according to the invention,

[0012]FIG. 1b shows a detail view relating to the FIG. 1a structure,showing the arrangement of the locking device according to the inventionon the vehicle,

[0013]FIGS. 2a, 2 b and 2 c are a plan view, a longitudinal section anda cross-section of the transport securing arrangement according to theinvention with a side extension arm in the secured and locked transportposition,

[0014]FIGS. 3a, 3 b and 3 c show a plan view, a longitudinal section anda cross-section of the transport securing arrangement after a firstrelease step,

[0015]FIGS. 4a, 4 b, 4 c and 4 d show a plan view, a side view, across-section and a further side view of the transport securingarrangement according to the invention in the transport position andpartly unlocked condition,

[0016]FIG. 5 is a view in cross-section of the transport securingarrangement according to the invention in a partly unlocked condition,

[0017]FIGS. 6a, 6 b and 6 c show a plan view, a longitudinal section anda cross-section of the transport securing arrangement in the unlockedtransport position,

[0018]FIGS. 7a, 7 b and 7 c show a plan view, a longitudinal section anda cross-section of the transport securing arrangement in the unlockedtransport position,

[0019]FIGS. 8a, 8 b and 8 c show a plan view, a longitudinal section anda cross-section of the transport securing arrangement according to theinvention after the side extension arm has been partly moved out,

[0020]FIGS. 9a, 9 b and 9 c show a plan view, a longitudinal section anda cross-section of the transport securing arrangement in the lockedworking position,

[0021]FIGS. 10a, 10 b and 10 c show a plan view, a longitudinal sectionand a cross-section of the transport securing arrangement in theunlocked working position, and

[0022]FIGS. 11a, 11 b and 11 c show the transport securing arrangementwith the side extension arm partly pushed in.

[0023]FIG. 1a shows a vehicle 14 with a vehicle superstructure in theform of a crane, wherein the vehicle 14 has two side extension arms 15and the right side extension arm 15 has been moved completely into itsworking position. FIG. 1b shows a detail view of FIG. 1a in which it ispossible to see the arrangement of the transport securing arrangementaccording to the invention.

[0024]FIG. 2a shows a plan view of the transport securing arrangement,wherein it is possible to see the two constituent parts of the transportsecuring arrangement, which are arranged stationarily on the vehiclesuperstructure, more specifically the locking device 1 and the securinghook 10. In the illustrated embodiment the securing hook 10 is urged bya spring 3 in the direction of its anchorage position. The lockingdevice 1 is supported rotatably and can be rotated by the operator byway of the handle 9. It is also possible to see the cam-shaped portion 7of the locking device 1, which portion 7 is also rotated upon actuationof the handle 9. The cam-shaped portion 7 has a recess 16, wherein inthe illustrated condition the locking device 1 is safeguarded againstunintentional actuation by the clamping lever 2 which fixes thecam-shaped portion 7 at the recess 16 thereof in positively lockingrelationship.

[0025]FIG. 2b shows a cross-section taken along line A-A in FIG. 2a,additionally showing the pin portion 4 which is arranged on the sideextension arm 15 and which forms the anchorage position of the securinghook 10, and the pin 6 for anchoring the locking device 1. The pin 6 isurged by the spring 12 in the direction of the illustrated lockingopening 13. Unintentional movement of the side extension arm 15 out ofits secured and locked transport position as illustrated is preventedboth by the securing hook 10 which embraces the pin portion 4 and also,independently thereof, by the pin 6 which is introduced into theanchorage opening 13.

[0026]FIG. 2c shows a cross-section taken along line B-B in FIG. 2b, inwhich it is additionally possible to see a projection 18 arranged on thesecuring hook 10. In its illustrated anchorage position, the securinglever 10 which embraces the pin portion 14 rests against a supportsurface 23 on the static part, connected to the vehicle 14, of thelocking device 1.

[0027] Identical components of the arrangement will not be repeatedlyidentified in the Figures to be described hereinafter. The followingFigures successively show the transfer of the side extension arm 15 fromits secured and locked transport position into its fully extendedworking position and back again.

[0028] It can be seen from FIG. 3a that, in a first step, the clampinglever 2 was pivoted to release the locking device 1 so that the lockingdevice 1 is now rotatable by way of the handle 9. FIG. 3b shows alongitudinal section through the transport securing arrangement takenalong line A-A in FIG. 3a. FIG. 3c shows a cross-section through thetransport securing arrangement according to the invention taken alongline B-B in FIG. 3b.

[0029] In FIG. 4a, as the next step, the cam-shaped portion 7 wasrotated in the counter-clockwise direction by rotation of the handle 9,whereby on the one hand the pin 6 was moved out of its anchorage opening13 and on the other hand, by the rotation of the cam-shaped portion 7,the securing hook 10 was pivoted away from the pin portion 4, by way ofthe projection 18 arranged on the securing hook. FIG. 4b shows a sideview of the transport securing arrangement according to the invention.FIG. 4c shows a cross-section through the transport securing arrangementaccording to the invention, taken along line D-D in FIG. 4b. FIG. 4dshows a further side view of the transport securing arrangementaccording to the invention viewing along line X in FIG. 4c in which itis possible to see a pin 17 arranged on the static housing of thelocking device 1. It is also possible to see one of the—in thisembodiment two—guide surfaces 11 and 5 extending inclinedly with respectto the longitudinal center line of the locking device 1, wherein uponrotation of the locking device 1 the guide surface 5 slides along thepin 17 and thus the pin 6 connected to the locking device 1 is movedupwardly out of its anchorage opening 13.

[0030]FIG. 5 which corresponds to FIG. 4c shows the transport securingarrangement according to the invention after a further rotary movementof the locking device 1, whereby the securing hook 10 has passed intoits maximum pivoted position by way of the projection 18, by thecam-shaped portion 7 of the locking device 1.

[0031]FIGS. 6a through 6 c show the next condition in the time sequence,wherein, as can be seen in particular from FIG. 6a, the projection 18 onthe securing hook 10 has now passed into the recess 8 of the cam-shapedportion 7, whereby the pin 6 is fixed in the locking device 1 againstthe force applied thereto by the spring 12. It can also be seen that thesecuring hook 10 now no longer rests on the support surface 23 on thestatic housing of the locking device 1 and that the pin 6 has been movedcompletely out of its anchorage opening 13, whereby the spring 12 actingon the pin 6 has been compressed to its maximum. In that condition theside extension arm 15 is in the unlocked and non-secured transportposition and can now be moved out of that position.

[0032]FIG. 7 shows the condition of the transport securing arrangementaccording to the invention after implementation of the operationsdescribed with reference to FIGS. 2 through 6, in which respect, as adistinction to FIGS. 2 through 6, the handle 9 has been actuated in theclockwise direction. This shows that the locking device 1 is releasableby rotary movement, independently of the direction of rotation. In thepresent embodiment that is achieved in structural terms by thearrangement of two guide surfaces 5 and 11 with opposite screwdirections, so that, upon rotation of the locking device 1 in thecounter-clockwise direction, the pin 17 slides along the guide surface 5and, upon rotation in the clockwise direction, it slides along the guidesurface 11, whereby in both cases the pin 6 is moved upwardly out of itsanchorage opening 13. Attention is directed in particular to themirror-inverted positions of the guide surfaces 5 and 11 in FIGS. 6b and7 b.

[0033] In FIGS. 8a through 8 c the side extension arm 15 has alreadybeen partially moved out of its transport position in the direction ofthe working position, whereby the securing hook 10 has come into contactwith the pin portion 4, at its inclined outside edge 21, and has therebybeen pivoted, which has moved the pin 18 out of the recess 8 of thecam-shaped portion 7 and has thereby released the cam-shaped portion 7of the locking device 1. Thereby, the pin 6 has been urged downwardly onto the side extension arm 15 by the spring 12 so that the pin 6 nowbears against the side extension arm 15.

[0034] In FIGS. 9a through 9 c the side extension arm has been movedinto its fully extended working position. The pin 6 has been urged bythe spring 12 into the outer anchorage opening 19 and the securing hook10 now again bears against the support surface 23 on the static part ofthe housing of the locking device 1. Overall therefore the sideextension arm 15 is in its fully extended working position in which itis locked by the locking device 1.

[0035]FIGS. 10a through 10 c show the transport securing arrangementaccording to the invention after unlocking of the locking device 1, withthe side extension arm 15 still being in its working position. It canalso be seen that the securing hook 10 now no longer bears against thesupport surface 23 on the static part of the housing of the lockingdevice 1 but with its projection 18 fixes the cam-shaped portion 7whereby the pin 6 is fixed in its illustrated position.

[0036]FIGS. 11a through 11 c correspond to FIGS. 8a through 8 c, withthe difference that the side extension arm 15 is now moved out of itsfully extended working position in the direction of its inward transportposition. In this case, the securing hook 10 has been pivoted by contactof its inclined inside edge 22 with the pin portion 4, whereby thecam-shaped portion 7 has been released from the projection 18 and thepin 6 is pressed against the side extension arm 15 by the spring 12. Assoon as the pin 6 passes over the anchorage opening 13, by virtue of themovement of the side extension arm 15, the pin 6 is urged into theanchorage opening 13 by the spring 12 and the side extension arm 15 isthus locked by way of the locking device 1. The securing hook 10 is alsourged by the spring 3 into its locking position in which it embraces thepin 4 so that the side extension arm 15 is doubly secured in itstransport position.

1. A transport securing arrangement for a side extension arm of avehicle having a locking device and an additional securing hook,characterised in that the locking device is arranged in relation to thesecuring hook in such a way that release of the locking device leads torelease of the securing hook from its anchorage.
 2. A transport securingarrangement as set forth in claim 1 characterised in that the securinghook is supported pivotably.
 3. A transport securing arrangement as setforth in claim 1 characterised in that there is provided a spring whichurges the securing hook into the anchorage position.
 4. A transportsecuring arrangement as set forth in claim 1 characterised in that thelocking device is supported rotatably.
 5. A transport securingarrangement as set forth in claim 4 characterised in that the lockingdevice is releasable by rotation.
 6. A transport securing arrangement asset forth in claim 5 characterised in that the locking device isreleasable by rotation independently of the direction of rotation.
 7. Atransport securing arrangement as set forth in claim 4 characterised inthat the locking device has at least one guide surface extendinginclinedly relative to the longitudinal center line of the lockingdevice, wherein upon rotation of the locking device the guide surfaceslides along a pin.
 8. A transport securing arrangement as set forth inclaim 1 characterised in that the locking device is urged in thedirection of the locking position by a spring.
 9. A transport securingarrangement as set forth in claim 1 characterised in that the securinghook partially bears against an eccentrically shaped portion of thelocking device.